Final answer:
Hypokalemia can cause muscle weakness, increased heart rate, and decreased blood pressure.
Step-by-step explanation:
A potassium level of 3 indicates hypokalemia, which is an abnormally low potassium blood level. The nurse should expect the following assessment findings:
- Muscle weakness: Hypokalemia can impair the function of skeletal muscles, leading to weakness.
- Increased heart rate: Severely low potassium levels can cause arrhythmias and increased heart rate.
- Decreased blood pressure: Hypokalemia can affect the function of the heart, leading to decreased blood pressure.